president obama, this has been a source of contention. the romney campaign went after him for what they thought was an insufficient relationship in connection with the state of israel. but the president isn't the only one who hasn't been to israel until this point in his presidents. there's been only four other presidents that have been to israel, nixon, carter, bush two went there twice, and clinton who made four. >> thank you, sir. appreciate it. >>> governor chris christie gets serious about the scale. it is time now for the poly side bar. just one day after joke around with david letterman about his weight, the governor admitted it's really not something to laugh about. >> of course i care about it. and i'm making the best effort i can. and sometimes i'm successful, and other times i'm not. and sometimes periods of great success are followed by periods of great failure. >> governor christie says his doctor often warns him of the health risks of being overweight. >>> comedian chris rock might joke around about gun violence, but he's re